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Has anyone got any tips on how to perfectly cut away everything outside the pink line. Im thinking that project knife is my friend but I need to align the edges of the knife perfectly.

enter image description here

Any help you be appreciated.

RodT
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  • Using the knife, use the C key (angle constraint) to have horizontal or vertical alignment. Knife shortcuts and options are displayed in the bottom status bar. – lemon Feb 20 '20 at 10:44
  • https://blender.stackexchange.com/questions/63719/cut-out-surplus-material/63721 https://blender.stackexchange.com/questions/77279/projection-geometry-example/77281#77281 – Duarte Farrajota Ramos Feb 20 '20 at 11:46

1 Answers1

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Use a single plane and a Knife Project tool.
You can align it rather easily using Vertex Snapping.

  1. Enable Snapping to Vertex, and set it to Closest
  2. Use the move tool to move the edges
  3. Use the Mouse cursor to control which vertex it snaps to

enter image description here

jachym michal
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  • Hmm I cannot seem to get it to snap :-( Did you select both the plane and the grid below before going into edit mode https://www.dropbox.com/s/q056ugjtfm49g2t/square.blend?dl=0 – RodT Feb 20 '20 at 11:49
  • Hello :). Make sure the snapping is Enabled (the magnet icon is blue). It works just fine in your file. – jachym michal Feb 20 '20 at 11:54
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    Just had to hold my mouse while moving. – RodT Feb 20 '20 at 11:56
  • Glad it works for you :). Feel free to mark the answer as accepted ✓ so others can easily find it. – jachym michal Feb 20 '20 at 12:06